Improvement in filters



THOMAS SIMMONS, OF CHICAGO, ILLINOIS.

' IMPROVEMENT IN FILTERS.

Specification forming part of Letters Patent No. 59,467. dated November 6, 1866.

To all whom t may concern.-

Beit known that I, THOMAS SIMMONS, of Chicago, in the 'county of Cook and State of Illinois, have invented a Conical Compressed Filter; and I do hereby declare that the following is a full, clear, and exact. description thereof, reference being had to the accoinpanyin g drawings and letters of reference marked thereon, making a part of this specification, in which- Figure I is a central sectional elevation of my iilter. Fig. II is a View of the bottoni of the saine. Fig. III is a perspective representation of the perforated cylinder covering the lower end of the discharge-pipe.

The nature of my invention consists iii covering the lower end of the discharge-pipe, at

the top of the metallic cone, with a perforated cylinder, which is also covered with iiaiinel cloth, operatingas a strainer, and in separating the dili'erent kinds of iiltering material used by ineans of flannel cloth or other similar material secured to a metallic ring for keeping the cloth in place; and also in putting a bar across the bottom of the cone, and securing it in such a manner that a screw put through the bar will, when operated, force a metallic follower against the filtering material, so as to press it as coinpactly as desired, for purifying the water passing through 5 and further, in making a glass nozzle for the lower end of the siphon, and adjusting a cap over the end of the same, for shutting off the flow of water, so that no suction is required to put the siphon in operation when once started, although the tube be not kept suspended as when filtering.

By this arrangement a very substantial, convenient, land effectual device is produced for taking the decayed vegetable and animal inaiter out of water, as it occupies but little space, and can be set in any common vessel used for holding water, and ilter fast enough for all ordinary purposes.

To enable others skilled in the art to make and use my filter, I willy describe the method of construction and operation'of the same.

A represents the outside conical case, which is made of zinc or such material as will not corrode when put in water. At the top of the case is made an opening for receivingI the discharge-pipe M, which is secured to the case by means of solder, or otherwise, ina permanent manner. The lower end of the pipe is covered with the perforated cap lc, used as a support for the strainer J, made of iiannel or of similar material, the object being lto prevent the sand U from being pressed into the lower end of the pipe, which would Very much lessen the filtering-service at that point.

I is the flannel cloth dividing the sand from the charcoal, as seen at Fig. I, and the cotton from the charcoal. I is the annel between the cotton vW and the follower B. lIhe flannel is used for the purpose of keeping the sand U, charcoal V, and cotton WV separate from each other, and as a strainer for preventing the impurities in the water from passing through. X is the metallic rings (to which the annel is attached by means of thread) which are used to keep the strainers in place. The cotton also operates as a strainer, and

, may betaken out and washed when desired.

By thisgeneral arrangement in filling, the case A need not be so large as those in common use, for tlie strainers obviate the necessity of using but little sand and charcoal.

H is the screw passing through the bar C, and the end resting against the follower B, in position for pressing the ilterin g material compactly in the case A. The bar C has open mortises made in the ends, as seen at Fig. Il, for the purpose ot allowing the thuinb-screws F to pass through the bar and into the lugs L attached to the case A and hold the bar in position. D is the head of the screw H, and is also tlie foot of the ltervE, being the parts extending downward and resting upon the bottom of the vessel containing the impure water. O shows the glass nozzle, on which is made the bilge P, for holding the rubber tube B from slipping od. S is the cap, made of rubber, the lower end being closed with the stopper T, made of glass or other suitable material. N is the bilge made on the pipe M for securing the upper end ofthe tube B.

Opera-tion: When the iilter has been constructed as above described, it can be set in the water to be purified, similar to portable lters now in use. The cap S must then be removed and suction applied to the nozzle O, either by means of the mouth or otherwise, so as to exhaust the air above the water, at which time the purified water will pass downward through the siphon or rubber tube It. The

cap can then be replaced on the nozzle, which l 2. In' combination with the foregoing7 the will shutthe ow ofwater until again removed. nozzle O, cap S, stopper T, with the tube R Having thus fully described my device, and pipe M, as described and set forth. what I claim, and desire to secure by Letters Y Patent of the United States, is- THOMAS SIMMONS.

1. The arrangement and combination of the Y ,f cap K, cloth J and I I I', cotton W, and fol- Witnesses: lower B, with bar C, screw H, and foot D, sub LEONARD S. DIMooK, stantially as set forth. D. J. LYON. 

